Expii

What Expii does

Expii, Inc. is a privately held, Pittsburgh-based educational technology company founded in 2014 by Carnegie Mellon mathematics professor Po-Shen Loh. The company operates a free, web-based personalized learning platform that delivers more than 1,000 lessons across math and science subjects, including Pre-Algebra, Algebra 1, Biology, and eight subjects in early-stage development (Algebra 2, Geometry, Calculus, Advanced Topics, Chemistry, Physics, Earth Science, Astronomy). Each topic is presented through multiple explanation formats (video, interactive, comics, illustration, stories) to accommodate different learning styles, and the peer-to-peer contribution feature allows users to submit their own explanations under in-house editorial oversight.

The platform's core technical component is the Grandmaster adaptive practice system, which tracks per-user accuracy and streak counts to continuously tailor problem difficulty to the user's current ability. Supporting products include Expii Solve (interactive math puzzles tied to current events), Daily Challenge (middle-school math lessons), Project Spark (creative video content), and the Spirit of Ramanujan STEM Talent Initiative (grants and mentorship for emerging mathematicians). Distribution is exclusively through expii.com, with social channels and a forum used for top-of-funnel acquisition.

Expii operates a freemium business model with no pricing tiers, subscriptions, or paid features disclosed; the Terms of Service references potential third-party advertising as a possible future revenue stream, and the company's only known external capital is a $1.31M seed round closed in September 2014 from Great Oaks Venture Capital and Rothenberg Ventures. Customer segments are horizontally defined: middle and high school students, self-directed lifelong learners, and educational programs (notably the New York Academy of Sciences Global STEM Alliance, a content-contribution partner rather than a paying customer).

Name

Expii

Legal name

Expii, Inc.

Website

https://expii.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Expii is a free, web-based personalized learning platform founded in 2014 by Po-Shen Loh, delivering 1,000+ math and science lessons across multiple formats to middle and high school students and self-directed learners globally.

Ownership category

akta.pro rank

Product category

Online Learning Platform

NAICS

Educational Services (611), Exam Preparation and Tutoring (611691)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Adaptive Learning & Personalization Engines (EDAFAFAB)

akta.pro secondary industries

Adaptive Learning & Personalized Instruction Software (EDAJAMAE), Adaptive/Personalized Curriculum & Intelligent Courseware (EDAFACAE), Interactive Multimedia Learning Content (Video, Audio, Interactive Lessons) (EDAFACAG)

Keywords

• Adaptive learning platform
• Online math tutoring
• Science education
• Personalized learning
• Crowdsourced education

Headquarters

HQ city

Pittsburgh

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Free Platform (Revenue Model Unclear): Expii operates as a free platform with no explicit revenue model disclosed. The platform may be funded through grants, donations, or advertising. Terms of Service mentions third-party advertising may be displayed.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Expii provides a free, web-based personalized learning platform offering thousands of math and science lessons delivered through multiple explanation formats (video, text, interactive, comics, and stories). Its Grandmaster adaptive system personalizes problem sets to each learner, and the platform is augmented by community-contributed content and supplementary experiences such as Daily Challenge, Expii Solve, and Project Spark.

Product overview

Expii is a free personalized learning platform that offers a portfolio of interconnected educational products. The core platform (Expii) provides thousands of math and science lessons across multiple subjects including Pre-Algebra, Algebra 1, Algebra 2, Geometry, Calculus, Advanced Topics, Chemistry, Physics, Biology, Earth Science, and Astronomy. This core is augmented by Expii Grandmaster, an adaptive practice system that personalizes problem delivery, and Expii Solve, which offers interactive math puzzles through current events and pop culture. Additional offerings include Project Spark for creative content development and the Spirit of Ramanujan STEM Talent Initiative for supporting emerging talent. The platform partners with the New York Academy of Sciences for the Student Contribution Showcase.

Differentiator

Problem solved

Functional benefit

Brands

• Daily Challenge: Math lessons for middle school students that develop creative thinking through an innovative teaching style.
• Project Spark
• Expii Solve
• Spirit of Ramanujan

Products and services

• Expii Free, web-based personalized learning platform offering thousands of math and science lessons through multiple explanation formats, with adaptive practice via the Grandmaster system.
• Expii Grandmaster

Quantifiable outcome

• 1000+ lessons across math and science subjects
• +1 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• New York Academy of SciencescoreStrategic or Co-development PartnerExpii partnered with the New York Academy of Sciences' Global STEM Alliance to highlight new voices in teaching. Students from United Technologies STEM U, The Junior Academy, and 1000 Girls, 1000 Futures programs can add their unique perspectives to Expii's growing knowledge base through the contribution feature.
• Spirit of Ramanujan STEM Talent InitiativeminorStrategic or Co-development PartnerExpii Solve puzzles connect to the Spirit of Ramanujan initiative which honors Srinivasa Ramanujan's legacy by supporting emerging mathematicians who lack traditional institutional support through financial grants and mentorship.
• Daily Challenge (Po-Shen Loh)minorStrategic or Co-development PartnerDaily Challenge is a connected initiative offering math lessons for middle school students that develop creative thinking through innovative teaching style, created by Po-Shen Loh.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Khan Academy: Free, non-profit personalized learning platform offering math and science lessons with adaptive practice. Direct competitor in free STEM learning with similar K-12 student focus, multi-format content, and adaptive exercises.
• Brilliant: Interactive STEM learning platform focused on math, science, and computer science with problem-based pedagogy and adaptive difficulty. Closely comparable on interactive learning style and STEM subject coverage.
• Quizlet: Community-driven learning platform with user-generated study content and adaptive study modes across many subjects. Comparable on the user-contributed content model and free consumer learning approach.
• Codecademy: Interactive, self-paced learning platform with adaptive lessons, multi-format content, and free + paid tiers. Comparable on the interactive, personalized learning style and freemium GTM motion.
• Mathway: Free math problem-solving and tutoring platform covering algebra through calculus. Comparable on free math help and adaptive problem solving, though narrower subject focus.
• Art of Problem Solving (AoPS): Math-focused learning community with courses, textbooks, and a problem-solving forum for advanced and competition students. Comparable on creative problem-solving pedagogy and community-driven math content.

Broad incumbents

• IXL Learning: Large, established adaptive learning platform covering K-12 math, science, and more with subscription B2C and school licensing. Broader portfolio but directly comparable adaptive practice and personalization engine.
• Wolfram Alpha: Computational knowledge engine widely used for math/science problem solving and learning. Comparable as a free reference and problem-solving resource, though positioned more as a tool than a structured curriculum.
• Carnegie Learning: Established adaptive math curriculum provider with school/district focus and AI-driven tutoring. Comparable on adaptive math instruction and Pittsburgh-area educational technology heritage.

Emerging players

• DreamBox Learning: Adaptive math platform for K-8 with intelligent tutoring and school/district B2B focus. Comparable on adaptive personalization engine and math subject focus, though with stronger institutional distribution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/ExpiiInc
• YouTubeyoutube.com/expii
• Facebookfacebook.com/ExpiiInc
• Instagraminstagram.com/expii_
• LinkedInlinkedin.com/company/expii-inc-

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Expii